CVE-2026-19448

HIGHCVSS 7.5/10EPSS 0.24%

Last modified

CVE-2026-19448 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 A stack memory corruption vulnerability exists in the AIX IPsec ESP decapsulation handler. Successful exploitation may corrupt kernel stack state and cause a system crash, resulting in denial of service.. EPSS estimates a 0.24% chance of exploitation in the next 30 days.

Description

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 A stack memory corruption vulnerability exists in the AIX IPsec ESP decapsulation handler. Successful exploitation may corrupt kernel stack state and cause a system crash, resulting in denial of service.

Metrics

EPSS Probability
0.24%

14.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
IbmVios>= 4.1.0, < 4.1.0.50
IbmVios>= 4.1.1.0, < 4.1.1.30
IbmVios>= 4.1.2.0, < 4.1.2.20
IbmAix>= 7.2.5, <= 7.2.5.212
IbmAix>= 7.3.2, <= 7.3.2.5
IbmAix>= 7.3.3, <= 7.3.3.2
IbmAix>= 7.3.4, <= 7.3.4.1

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-19448?
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 A stack memory corruption vulnerability exists in the AIX IPsec ESP decapsulation handler. Successful exploitation may corrupt kernel stack state and cause a system crash, resulting in denial of service.
How severe is CVE-2026-19448?
CVE-2026-19448 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.
How do I fix CVE-2026-19448?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST